A Study Of Power Transmission Pricing Method And Model In Electricity Market

By introduce the competition into the power industry, the purpose of the marketing reformation in this industry is that to optimize the power system resources collocation by marketing mechanism. As the bridge of electrical generator and the electrical user, the electrical network was required to completely open because of the development of the market competition. The result is that the separation of the transmission from the power production and purchase, and come into being an independence transmission price. A reasonable fair transmission price will offer the correct economic signal, stimulate the optimize collocation of the electrical resources, and let the electricity transmission enterprise to raise the level of their operation,management and layout, promote the well development of the transmission enterprise.This paper starts with the world process of the electricity market, introduces the design conceive,content and request of the transmission price making in the electricity market. At first, this paper discusses the calculation of transmission cost, and introduces two methods that are annual accounting cost method and average increment cost method.After confirm the cost, this paper emphatically elaborates the method of sharing the charge of transmission. Based on the basic request of transmission charge sharing, the methods divided into comprehensive cost and marginal cost. In which, comprehensive cost method includes the contract route method, the stamp method, boundary electric current method, MW—km method, one by one line method and current tracking method etc. Marginal cost method includes the long term marginal method and the short term marginal method. This paper studies above-mentioned method and mathematics model one by one, and made the compared for suitable and the advantage and disadvantage of various method.Because of the instability and the limitedness of the electrical network, the condition with overload line sometimes may appear in the operation of electrical network. This thing was named congestion. Congestion management is a problem that does not allow to blench in the transmission pricing. This paper based on the request of congestion, introduces two methods that use the economic means and technical means, the optimum current method and pricing mechanism management method.According to the merchandise property of electrical energy, this paper have put forward to the method and train of thought that charge of electricity uses and fixes a price with quality discuss.At last, according to the actuality of the transmission pricing, based on the results of this paper, the writer gives some suggestions for our country to pricing the transmission.